Hollywood colorist Tracey Cunningham, who is a Redken creative consultant, helped Cameron Diaz, Jessica Biel and Jennifer Lopez achieve picture-perfect color for the MTV Movie Awards June 6. Cunningham’s Red Carpet-worthy formulas give lackluster locks a summery boost. Here, she shares her formulas: For Diaz’s California blonde, use equal parts Redken Shades EQ 09AA Papaya, 09G Vanilla Crème and Processing Solution; finish with Shades EQ 000 Crystal Clear and Processing Solution. For Biel’s sun-kissed brunette, apply equal parts of Shades EQ 09NB Irish Crème, 09AA Papaya and Processing Solution. Add highlights with Blonde Icing Conditioning Crème Lightener and finish with Shades EQ 000 Crystal Clear with Processing Solution. For Lopez’s golden brunette, use Shades EQ 09NB Irish Crème with equal parts Processing Solution and highlight with Redken Blonde Icing Conditioning Crème Lightener; finish with Shades EQ 000 Crystal Clear with Processing Solution.